Window sealing strip



United States Patent WINDOW SEALING STRIP Robert 0. Morgann and RussellJ. Bush, Dayton, Ohio, assignors to General Motors Corporation, Detroit,Mich., a corporation of Delaware Application December 5, 1950, SerialNo. 199,318

6 Claims. (Cl. 189-65) This invention relates to weather-sealing stripsfor casement windows, or other windows wherein the window sash moveslaterally against a stationary window frame to close the window opening.

An object of this invention is to provide a very economically made yethighly efllcient non-metallic sealing strip for such windows.

Another object is to provide such a sealing strip which can be readilyand quickly assembled upon the window sash, or removed therefrom forreplacement or other purposes.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings wherein a preferred embodiment of the present invention isclearly shown.

In the drawings:

Fig. 1 shows a front elevation of a casement window having aweather-sealing strip applied thereto according to this invention.

Fig. 2 is a section taken on line 2-2 of Fig. 1 on an enlarged scale.

Fig. 3 is a section taken on line 3-3 of Fig. 1 on an enlarged scale.

Fig. 4 is a perspective detail view illustrating a means for fasteningthe end of the sealing strip to the sash frame.

Similar reference characters refer to similar parts throughout theseveral views.

Reference numeral designates the steel sash frame which extends aroundthe periphery of the movable window sash. Sash frame 10 has an outwardlyprojecting outside peripheral flange 11, an offset inner flange 12extending continuously around its inner periphery, and a continuousrelatively short outwardly projecting flange or head 13 at the interioredge 14 of frame 10. Bead 13 thus forms a shallow channel 15 extendingcontinuously around the outer periphery of frame 10.

The movable sash 10 is illustrated in the drawings as closed by beingmoved to the right (as viewed in Figs. 2 and 3) against a stationarysteel frame rigidly fixed in place to the side wall 21 of a building inany suitable well-known manner. Frame 20 has an inwardly projectinginterior flange 22 and an offset exterior flange 23. Figs. 2 and 3illustrate how the section of sash frame 10 overlaps and interfits withthe section of the stationary window frame 20 when the movable windowsash is in window-closing position.

Now according to this invention a flexible flat-section band 30 ofelastic resilient rubber or rubber-like material is applied to the steelsash frame 10 so that it fits flatwise snugly within the shallow channel15 adjacent the small outwardly projecting head 13. Band 30 is ofuniform cross section and has an integral angularly projecting and henceeasily flexed sealing flange 31 which extends around head 13 andprojects laterally beyond the interior edge 14 of sash frame 10 so thatthe edge of said flange 31 is pressed into sealing contact with the flatsurface of flange 22 of stationary frame 20 when sash frame 10 is inclosed position, as shown in Figs. 2 and 3.

In the perferred form, the flexible elastic band 30 is made in one pieceand is retained in place under tension by stretching same around thefour sides of the sash frame 10 and fastening only the two ends thereofto frame 10. Fig. 4 shows the preferred form of a bend wire hook 35which may be used to fasten each end of band 30 to frame 10. Hook 35 issecurely fastened to band 30 by forcing the two angularly bent free ends36 of the Wire thru the elastic body of band 30, as clearly shown inFig. 4. The bent end 37 of hook 35 is preferably slightly collapsible(due to the springiness of the folded wire) and may be readily forcedthru an aperture 38 in the bottom of the shallow channel 15 in frame 10,as shown in Fig. 3.

Now to properly assemble the elastic flexible band 30 to the sash frame10, one end of band 30 is first attached in place by its hook 35 asabove described and then band 30 is simply stretched around frame 10 tolie within its peripheral channel 15 and the hook 35 at the other end ofband 30 is hooked into its aperture 38 in frame 10. Thus band 30 isretained in place under such tension as will cause it to lie snuglywithin its shallow channel 15 at all times and yet be sufiicientlyyieldably retained as not to restrict any required flexing of thesealing flange 31. When band 30 is thus held under even tension from endto end thereof it will always be urged to return to its normal snug fitwithin channel 15 if by any cause it be accidently dislocated.

The drawings illustrate common cross sections of steel sash frames andstationary frames used in present day casement windows. The flexibleelastic sealing strip 30 of this invention may be very simply andquickly applied to such windows as above described. The strip 30 may bemade in continuous length and cut to the desired length on the job whenattaching same. Also the Wire hooks 35 can be very quickly and simplyattached to the strip ends by the workman on the job by simply pressingthe wire ends thru the strip at the desired location.

While the embodiment of the present invention as herein disclosed,constitutes a preferred form, it is to be understood that other formsmight be adopted.

What is claimed is as follows:

1. In combination, a window having a stationary frame, a swinging windowsash having a sash frame swingable into abutting relationship with saidstationary frame to close the Window opening, said sash frame having anoutwardly-opening relatively wide and shallow channel extending aroundthe periphery thereof, a predetermined length less than the peripherallength of said channel of flatsection elastomeric strip retainedflatwise in said relative- 1y shallow channel and extendingsubstantially around the periphery of said sash frame, said strip havingan integral flexible sealing flange extending longitudinally along oneedge of said strip and projecting laterally beyond the closing face ofsaid sash frame and pressed edgewise into sealing engagement with saidstationary frame when said sash is in closed position, and a pair ofhooks engaging the strip and positioned at opposite terminal ends onlyof said strip and adapted to engage portions of said sash frame, wherebythe strip is held in position under tension in said channel forretaining the strip in position therein.

2. A swinging window sash comprising in combination a sash frame havingan outwardly-opening relatively shallow channel therein extending aroundthe periphery thereof, a length of elastic flat-section band of flexibleand elastic non-metallic material of less free length than the peripheryof said channel and retained flatwise within said shallow channel, saidband having an angularly projecting sealing flange extendingcontinuously along one edge of said band, said flange having a sealingedge pro jecting edgewise beyond the closing face of said sash frame soas to initially engage the stationary surface against which said sash isclosed and holding means inserted into opposite terminal ends of theband only and adapted to engage the frame for holding the band instretched condition to the sash frame.

3. A swinging window sash comprising in combination a sash frame havingan outwardly-opening relatively shallow channel therein extending aroundthe periphery thereof, and a predetermined length less than theperiphery of said channel of elastomeric sealing strip adapted for beingretained flatwise within said shallow channel, said strip having anangularly projecting sealing flange extending continuously along oneedge of said strip, said flange having a sealing edge projectingedgewise beyond the closing face of said sash frame so as to initiallyengage a stationary surface against which said sash is closed, saidstrip having detachable retaining wire hooks inserted into andoverlapping terminal ends of said strip only and projecting therebeyond,said hooks adapted to be hooked into holes in said sash frame to securethe ends of said strip to said frame whereby the strip is held undertension on said frame.

4. A sealing strip for use with a swinging window sash the combinationcomprising; a window sash, a relatively shallow U-shaped channel on theperiphery of said sash, said channel being formed between a projectingflange and a second smaller flange in spaced relation to said projectingflange, an elongated elastomeric sealing strip of predeter mined lengthless than the periphery of said channel for being wound around a majorportion of said sash, said strip having a flat portion thereon for beingretained in a portion of said U channel and an angularly projectingsealing flange extending continuously along said strip, said sealingflange adapted to project laterally over said second smaller flange ofsaid U channel, and retaining means for said strip, said means includinghooks adapted for attachment to the terminal ends only of said strip,and means on the other end of said hooks for engaging portions of saidsash whereby the strip may be stretched and attached to said sash andmaintained in said U channel.

5. A sealing strip for use with a swinging window sash the combinationcomprising; a window sash, a relatively shallow U shaped channel on theperiphery of said sash,

said channel being formed between a projecting flange adapted to abut awindow opening for said sash and a second smaller flange parallel to andin spaced relation to said projecting flange, an elongated elastomericsealing strip of predetermined length less than the periphery of saidchannel adapted to be wound around a major portion of said sash, saidstrip having a flat portion thereon for being retained in a portion ofsaid U channel and an angularly projecting sealing flange extendingcontinuously along said strip, said sealing flange adapted to projectlaterally over the smaller flange of the U channel, and retaining meansfor said strip, said means including hooks adapted forattachment to theterminal ends only of said strip, said hooks having prongs at one endthereof for inserting into the end portion of said strip, and means onthe other end of said hooks for engaging portions of said sash wherebythe strip may be placed under tension and maintained in said U channel.

6. A sealing strip for use with a swinging window sash the combinationcomprising; a Window sash, a relatively shallow channel on the peripheryof said sash, an elongated elastomeric sealing strip of predeterminedlength less than the periphery of said channel and adapted to be woundaround a major portion of said sash, said strip having a portion thereonfor being retained in a portion of said channel and an angularlyprojecting sealing flange extending continuously along said strip, saidsealing flange adapted to project laterally over a smaller flange ofsaid channel, and retaining means for said strip, said means includinghooks adapted for attachment to the terminal ends only of said strip,and means on the other end of said hooks for engaging portions of saidsash whereby the strip may be placed under tension and maintained insaid channel.

References Cited in the file of this patent UNITED STATES PATENTS1,922,494 Nelson Aug. 15, 1933 2,452,815 Wagner Nov. 2, 1948 2,579,072Harris Dec. 18, 1951 2,586,525 Edwards et al Feb. 19, 1952 2,612,665Scott Oct. 7, 1952

